Alert archive / Nebraska / Tornado Warnings in 2011
Tornado Warning 11, NWS Cheyenne, WY
NWS Cheyenne, WY issued this tornado warning at Jun 25, 2011, 6:45 PM MDT for Banner County, Kimball County, Nebraska. It was in force for 30 min. 2 reports came from inside the area while it was in force.
The area
The outline as issued, with what was reported inside it.
The facts
- Issued
- Jun 25, 2011, 6:45 PM MDT (00:45 UTC)
- Expired
- Jun 25, 2011, 7:15 PM MDT
- In force
- 30 min
- Issued by
- NWS Cheyenne, WY
- Area
- Storm-based polygon
Counties Banner County, NE, Kimball County, NE
The radar
The Cheyenne radar (KCYS), 110 km from the middle of the area, began a volume at 00:46 UTC, the scan nearest the moment this went out.
Open the radar archive at this moment
The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Jun 25, 6:52 PM MDT | TORNADO | 12 Ne Kimball, NE | BRIEF TOUCHDOWN. |
| Jun 25, 6:54 PM MDT | HAIL 1.75 | 19 Se Harrisburg, NE | GOLF BALL SIZED HAIL LASTED FROM 654 PM UNTIL 656 PM MDT. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Denver, CO (KDNR), launched 00:00Z, 0.8 hours before the alert went out and 170 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.
- Mixed-layer CAPE
- 395 J/kg
- Mixed-layer CIN
- -88 J/kg
- Mixed-layer LCL
- 3421 m above ground
- 0-6 km bulk shear
- 61 kt
- 0-1 km storm-relative helicity
- 24 m²/s²
- 0-3 km storm-relative helicity
- 153 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 2.8
The text
As transmitted, in the capitals the NWS used until 2016.
492 WFUS55 KCYS 260045 TORCYS NEC007-105-260115- /O.NEW.KCYS.TO.W.0011.110626T0045Z-110626T0115Z/ BULLETIN - EAS ACTIVATION REQUESTED TORNADO WARNING NATIONAL WEATHER SERVICE CHEYENNE WY 645 PM MDT SAT JUN 25 2011 THE NATIONAL WEATHER SERVICE IN CHEYENNE HAS ISSUED A * TORNADO WARNING FOR... SOUTHEASTERN BANNER COUNTY IN THE PANHANDLE OF NEBRASKA... NORTHEASTERN KIMBALL COUNTY IN THE PANHANDLE OF NEBRASKA... * UNTIL 715 PM MDT * AT 641 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THIS DANGEROUS STORM WAS LOCATED 10 MILES NORTH OF BENNETT RESERVOIR...OR 12 MILES NORTH OF KIMBALL...AND MOVING SOUTHEAST AT 20 MPH. * LOCATIONS IMPACTED INCLUDE... MAINLY RURAL AREAS OF EXTREME SOUTHEASTERN BANNER AND NORTHEASTERN KIMBALL COUNTIES. PRECAUTIONARY/PREPAREDNESS ACTIONS... TAKE COVER NOW. MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A STURDY BUILDING. AVOID WINDOWS. IF IN A MOBILE HOME...A VEHICLE OR OUTDOORS...MOVE TO THE CLOSEST SUBSTANTIAL SHELTER AND PROTECT YOURSELF FROM FLYING DEBRIS. && LAT...LON 4138 10364 4147 10359 4143 10337 4126 10338 TIME...MOT...LOC 0045Z 293DEG 17KT 4139 10357 $$ RE
2 follow-up statements
136 WWUS55 KCYS 260057 SVSCYS SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE CHEYENNE WY 657 PM MDT SAT JUN 25 2011 NEC007-105-260115- /O.CON.KCYS.TO.W.0011.000000T0000Z-110626T0115Z/ BANNER NE-KIMBALL NE- 657 PM MDT SAT JUN 25 2011 ...A TORNADO WARNING REMAINS IN EFFECT FOR NORTHEASTERN KIMBALL AND SOUTHEASTERN BANNER COUNTIES UNTIL 715 PM MDT... AT 652 PM MDT...TRAINED WEATHER SPOTTERS REPORTED A BRIEF TORNADO. THE PARENT THUNDERSTORM WAS LOCATED 10 MILES NORTHEAST OF BENNETT RESERVOIR...OR 12 MILES NORTHEAST OF KIMBALL...MOVING SOUTHEAST AT 20 MPH. THE TORNADO HAD DISSIPATED BUT COULD REFORM AT ANY TIME. LOCATIONS IMPACTED INCLUDE... MAINLY RURAL AREAS OF NORTHEASTERN KIMBALL COUNTY. PRECAUTIONARY/PREPAREDNESS ACTIONS... TAKE COVER NOW. MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A STURDY BUILDING. AVOID WINDOWS. IF IN A MOBILE HOME...A VEHICLE OR OUTDOORS...MOVE TO THE CLOSEST SUBSTANTIAL SHELTER AND PROTECT YOURSELF FROM FLYING DEBRIS. && LAT...LON 4138 10361 4147 10357 4143 10337 4126 10338 TIME...MOT...LOC 0055Z 293DEG 17KT 4137 10351 $$ RE
656 WWUS55 KCYS 260112 SVSCYS SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE CHEYENNE WY 712 PM MDT SAT JUN 25 2011 NEC007-105-260122- /O.EXP.KCYS.TO.W.0011.000000T0000Z-110626T0115Z/ BANNER NE-KIMBALL NE- 712 PM MDT SAT JUN 25 2011 ...THE TORNADO WARNING FOR NORTHEASTERN KIMBALL AND SOUTHEASTERN BANNER COUNTIES WILL EXPIRE AT 715 PM MDT... THE STORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF THE WARNED AREA AND THE CIRCULATION IN THE STORM HAS WEAKENED. LAT...LON 4138 10361 4147 10357 4143 10337 4126 10338 TIME...MOT...LOC 0112Z 293DEG 17KT 4134 10341 $$ RE
The office that day
Everything else NWS Cheyenne, WY issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 25, 7:11 PM MDT | Severe Thunderstorm Warning | CYS | Cheyenne, Kimball | 23 min |
| Jun 25, 7:12 PM MDT | Severe Thunderstorm Warning | CYS | Box Butte, Sioux | 46 min |
| Jun 25, 7:24 PM MDT | Tornado Warning | CYS | Cheyenne | 36 min |
| Jun 25, 7:47 PM MDT | Tornado Warning | CYS | Cheyenne | 28 min |
| Jun 25, 7:55 PM MDT | Severe Thunderstorm Warning | CYS | Box Butte, Scotts Bluff, Sioux | 48 min |
| Jun 25, 8:13 PM MDT | Tornado Warning | CYS | Cheyenne | 32 min |
| Jun 25, 8:43 PM MDT | Severe Thunderstorm Warning | CYS | Cheyenne | 47 min |
| Jun 26, 9:02 AM MDT | Severe Thunderstorm Warning | CYS | Dawes | 40 min |
| Jun 26, 4:39 PM MDT | Severe Thunderstorm Warning | CYS | Dawes | 35 min |
Nearby
Tornado Warnings in Nebraska, 2011Every tornado warning in 2011Tornadoes in 2011
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.